Meaning
Statistical correlation score generated when comparing an unknown mass spectrum against a database of reference chemicals. Modern quality control software calculates this value to identify additives in a resin sample by finding the closest match in a digital archive. A high mass spectral library match provides confidence that the stabilizer used in the batch is the specific grade required by the contract.
This process prevents the accidental use of look-alike chemicals that might not offer the same level of long-term UV protection.
Database Correlation
Software algorithms rank potential candidates by comparing the intensity of every fragment ion. If the mass spectral library match score is below a certain threshold, the technician must manually verify the result. This secondary check is common when testing complex masterbatches where multiple additives are blended together.
Material Verification
Identifying the exact polymer grade is possible by looking at the thermal degradation products. Every proprietary resin leaves a unique fingerprint when heated in a furnace. A high match score confirms that the material delivered to the silo is the same as the material tested in the pilot run.
Authentication Certainty
Counterfeit resins are detected when the spectrum does not align with the official reference. This protects the moulder from using inferior materials that could fail under stress. Reliable identification ensures that the final part meets all safety and performance standards.
